UK B.S. BS 6323-8, LW20 Specialsteel Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Specialsteel | LW20 | B.S. | UK | Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes |
C | Si | Mn | P | S | Cr | Ni | Mo |
---|---|---|---|---|---|---|---|
≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00 -19.00 | 9.00 -12.00 | ≤ ≥ |
Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
---|---|---|---|---|---|---|
539 (≥) | 914 (≥) | 14 | 24 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 443 |
Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
---|---|---|---|---|---|---|---|
24 | - | - | 0.34 | - | |||
763 | 711 | - | 32.3 | 342 | - | ||
363 | - | 33 | 42.2 | 112 | 334 |
Heat treated : 1314°C - 1751°C
BS 6323-8 | Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes | BS-6323-8.pdf |
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